Question

Determine o valor da função f(x)=2ˣ para

A) x= 3

B) x= -3

Answer 1

$x = {2}^{3} \\ 2 \times 2 \times 2 \\ 8 \\ \\ x = {2}^{ - 3} \\ 2 \times 2 \times 2 \\ -8$

Answer 2

$f(x) = {2}^{x} \\ f(3) = {2}^{3} = 8 \\ f( - 3) = {2}^{ - 3} = {( \frac{1}{2}) }^{3} = \frac{1}{8}$